Improvement in caloric engines



UNITED STATES PATENT OFFIGE.

FRANK BILL, OF BROOKLYN, YORK.

IMPROVEMENT IN CALORIC ENGINES.

Specification forming part of Letters Patent No. 175,648, dated April 4, 1876; application filed I February 19, 1876. A

- To all whom it may concern:

Be it known that I, FRANK BILL, of the city of Brooklyn, county of Kings and State of New York, have invented a new and usefnl Improvement in Caloric Engines, which improvement is fully set forth in the following specification, reference being had to the accompanying drawing, in which Figurel represents a longitudinal vertical section. Fig. 2 is a transverse section of the furnace.

, shaft of the engine, so that, when the plunger of the air-pump rises, the bellows inject into said air-pump a quantity of air, and thereby the efi'ect of the air-pump and, consequently, the power of the engine are materially increased.

1n the accompanying drawing I have shown my improvements as applied to what is known 1 as Ropers Caloric Engine, but it must be remarked that said improvements are appliable to all kinds of caloric engines which are provided with an air-pump and with afurnace for heating the air injected by said airpump.

In said drawing, the letter A designates the furnace of a caloric engine, and B is the fire-grate, which is situated in said furnace, and below which'is left a closed space, 0, which communicates by a channel, a, with the air-pump D. The grate is made in two or more sections, so that it can be readily introduced or remo ed through the fire-door E, and each section of said grate is provided with one or more tubular air-conductors, b b, which extend up through the fuel spread on the grate, and which are open at top and bottom, so that the air injected into the chamber 0 can p"ss up freely through said air-couductthe air-pump D is combined a pair of bellows,

E, which connect with the suction opening d of said pump, and which are operated from the working-beam, or from the main shaft of the engine, being connected in such a manner that while the plunger of the air-pump rises, a quantity of air is injected into said air-pump, and thereby the effect of the air-pump and of the whole engine is greatly increased.

In air-pumps of the ordinary construction, the air which is sucked into the cylinder of said pump when the plunger rises produces a disagreeable noi'se.. By the application of my bellows the noise is obviated.

The bellows F, shown in the drawing, are composed of the stationary plate 6 and the oscillating suction-plate f, both plates being connected by leather or other flexible material.

I'do not wish to be restricted, however, to

any particular kind of bellows, since bellows ot' difl'erent construction may be substituted for that shown in the drawing without changing the effect.

It must be remarked that the air-conductors can be made with a round or any other suitable cross'section, and that said air-con ductors are inserted loosely into the grate, so that they can be renewed whenever it may be required.

What I claim as new, and desire to secure by Letters Patent, is-

l. The combination of tubular air-conductors with the grate of the furnace of a caloric engine andwith the air-pump D and eonnection a, substantially as and for the purpose described.

2. The combination of a pair of bellows with the air-pump D and operating mechnnism, as described,and with the furnace A of a caloric engine, substantially as set forth.

In testimony that I claim the foregoim, I have hereunto set my hand and seal this 12th day of February, 1876.

FRANK BILL. ['L.

Witnesses:

W. HAUFF, E F. KASTENHUBER. 

